window.onload = initForms;
function initForms() {
	for ( var i = 0; i < document.forms.length; i++) {
		document.forms[i].onsubmit = validForm;
	}
}
function validForm() {
	var allGood = true;
	var allTags = document.getElementsByTagName("*");
	for ( var i = 0; i < allTags.length; i++) {
		if (!validTag(allTags[i])) {
			allGood = false;
		}
	}
	return allGood;
	function validTag(thisTag) {
		var outClass = "";
		var allClasses = thisTag.className.split(" ");
		for ( var j = 0; j < allClasses.length; j++) {
			outClass += validBasedOnClass(allClasses[j]) + " ";
		}
		thisTag.className = outClass;
		if (outClass.indexOf("invalid") > -1) {
			thisTag.focus();
			if (thisTag.nodeName == "INPUT") {
				thisTag.select();
			}
			return false;
		}
		return true;
		function validBasedOnClass(thisClass) {
			var classBack = "";
			switch (thisClass) {
			case "":
			case "invalid":
				break;
			case "reqd":
				if (allGood && thisTag.value == "") {
					classBack = "invalid ";
				}
				classBack += thisClass;
				break;
			default:
				classBack += thisClass;
			}
			return classBack;
		}
	}
}